DOI:
10.1055/s-00000089
Ultraschall in der Medizin - European Journal of Ultrasound
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References
Nicolaides KH, Syngelaki A, Poon LC et al.
First-trimester contingent creening for trisomies 21, 18 and 13 by biomarkers and maternal blood cell-free DNA testing.
Fetal Diagn Ther 2014;
35: 185-192
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